12169397 has 4 divisors (see below), whose sum is σ = 12323520. Its totient is φ = 12015276.

The previous prime is 12169379. The next prime is 12169403. The reversal of 12169397 is 79396121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12169397 - 2¹⁴ = 12153013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12169397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12169307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76943 + ... + 77100.

It is an arithmetic number, because the mean of its divisors is an integer number (3080880).

Almost surely, 2^12169397 is an apocalyptic number.

It is an amenable number.

12169397 is a deficient number, since it is larger than the sum of its proper divisors (154123).

12169397 is an equidigital number, since it uses as much as digits as its factorization.

12169397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154122.

The product of its digits is 20412, while the sum is 38.

The square root of 12169397 is about 3488.4662819067. The cubic root of 12169397 is about 230.0151029780.

The spelling of 12169397 in words is "twelve million, one hundred sixty-nine thousand, three hundred ninety-seven".